<!-- - Thanks for opening an issue for us! Before you open an issue, - please check if a similar issue exists or has been closed before. - - If you're asking a question about how to use Blockly in your application, - please ask questions on the mailing list, instead of filing issues: - https://groups.google.com/forum/#!forum/blockly --> ### Problem statement `tests/generators/index.html` calls XMLHttpRequest synchronously in response to clickign the load button, giving the deprecation warning. ### Expected Behavior We should not call deprecated code, and there should not be a warning.